Dear all,
I am trying to use SparseVanka as a smoother in multigrid. Below is the
part of my code that initializes the multigrid smoother object.
...
MGLevelObject<SparseMatrix<double>> mg_matrices; // already populated with
level matrices
SparseVanka<double>::AdditionalData
vanka_data(std::vector<bool>{false,true});
MGSmootherPrecondition<SparseMatrix<double>,SparseVanka<double>,Vector<double>>
mg_smoother;
mg_smoother.initializes(mg_matrices, vanka_data);
...
When I compiled the code, there was one error: 'SparseVanka<double> has no
member named 'clear'. In instantiation of 'void
dealii::MGLevelObject<Object>::clear_elements() [with Object =
dealii::SparseVanka<double>]', required from 'void
dealii::MGSmootherPrecondition<MatrixType, PreconditionType,
VectorType>::clear()...
It seems that the SparseVanka class has no clear() method, which is
required by MGLevelObject. I speculate that SparseVanka is not ready to be
used as multigrid smoother yet, or this is not the correct way to use
SparseVanka as multigrid smoother.
Thank you in advance.
Best regards,
Chayapol
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